<template>
  <div class="detail-nav">
    <nav-bar>
      <div slot="left" class="back" @click="backclick">
        <img src="~assets/img/common/back.svg" alt="">
      </div>
      <div slot="center" class="titles">
        <div v-for="(item,index) in titles"
             class="titles-item"
             @click="itemClick(index)"
             :class="{active:currentIndex === index}">
          {{ item }}
        </div>
      </div>
    </nav-bar>
  </div>
</template>

<script>
import NavBar from '@/components/common/navbar/NavBar'

export default {
  name: "DetailNavBar",
  components: {
    NavBar
  },
  data() {
    return {
      titles: ['商品', '参数', '评论', '推荐'],
      currentIndex: 0
    }
  },
  methods: {
    itemClick(index) {
      this.currentIndex = index
      this.$emit('itemClick', index)
    },
    backclick() {
      this.$router.back()
    }
  }
}
</script>

<style scoped>
.detail-nav {
  background-color: #fff;

}

.titles {
  display: flex;
  font-size: 14px;
  padding: 0 15px;
}

.titles-item {
  flex: 1;
}

.active {
  color: var(--color-high-text);
}

.back img {
  margin-top: 12px;
}
</style>
